This is according to " Eat Right America's Nutrient density system" including nutrients in the evaluation: Calcium, Carotenoids: Beta Carotene, Alpha Carotene, Lutein & Zeaxanthin, Lycopene, Fiber, Folate, Glucosinolates, Iron, Magnesium, Niacin, Selenium, Vitamin B1 (Thiamin) Vitamin B2 (Riboflavin), Vitamin B6, Vitamin B12, Vitamin C, Vitamin E, Zinc, plus ORAC score X 2 (Oxygen Radical Absorbance Capacity is a method of measuring the antioxidant or radical scavenging capacity of foods).
Kale-100, Collard-100, Bok Choy-82, Spinach-74, Brussels Sprout-67
Straw Berry-21, Pomeg. Juice-19, Tomato- 16, Blue Berries-13, Orange-10
Anyway this is a very rough comparison because of nutritional composition of a fruit or a vegetable depends on many factors like climatology where it grows and cultivar/variety. Anti-nutrient factors also to be considered.